109899111 has 24 divisors (see below), whose sum is σ = 171177840. Its totient is φ = 62533632.

The previous prime is 109899107. The next prime is 109899149. The reversal of 109899111 is 111998901.

It is not a de Polignac number, because 109899111 - 2² = 109899107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109899111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109899151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36325 + ... + 39233.

It is an arithmetic number, because the mean of its divisors is an integer number (7132410).

Almost surely, 2^109899111 is an apocalyptic number.

109899111 is a deficient number, since it is larger than the sum of its proper divisors (61278729).

109899111 is a wasteful number, since it uses less digits than its factorization.

109899111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 39.

The square root of 109899111 is about 10483.2776840070. The cubic root of 109899111 is about 478.9954555787.

It can be divided in two parts, 10989 and 9111, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 109899111 in words is "one hundred nine million, eight hundred ninety-nine thousand, one hundred eleven".